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    <p>This should actually be done during the RowCreatedEvent. Just tested the following code and it worked marvelously to highlight/unhighlight a row on mouseover.</p> <pre><code>Private Sub GridView1_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowCreated If e.Row.RowType = DataControlRowType.DataRow Then e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#ccaaaa';") e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#ffffff';") End If End Sub </code></pre> <p>EDIT: Appending html output (NOTE: Works in both VB and C# with RowCreated - same output)</p> <pre><code>&lt;div&gt; &lt;table cellspacing="0" rules="all" border="1" id="GridView1" style="border-collapse:collapse;"&gt; &lt;tr&gt; &lt;th scope="col"&gt;ST_CD&lt;/th&gt;&lt;th scope="col"&gt;ST_CD_ALPHA&lt;/th&gt;&lt;th scope="col"&gt;ST_DESC&lt;/th&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;04&lt;/td&gt;&lt;td&gt;CA&lt;/td&gt;&lt;td&gt;CALIFORNIA &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;34&lt;/td&gt;&lt;td&gt;OH&lt;/td&gt;&lt;td&gt;OHIO &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;41&lt;/td&gt;&lt;td&gt;TN&lt;/td&gt;&lt;td&gt;TENNESSEE &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;42&lt;/td&gt;&lt;td&gt;TX&lt;/td&gt;&lt;td&gt;TEXAS &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;45&lt;/td&gt;&lt;td&gt;VA&lt;/td&gt;&lt;td&gt;VIRGINIA &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;46&lt;/td&gt;&lt;td&gt;WA&lt;/td&gt;&lt;td&gt;WASHINGTON &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;49&lt;/td&gt;&lt;td&gt;WY&lt;/td&gt;&lt;td&gt;WYOMING &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;14&lt;/td&gt;&lt;td&gt;IA&lt;/td&gt;&lt;td&gt;IOWA &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;24&lt;/td&gt;&lt;td&gt;MO&lt;/td&gt;&lt;td&gt;MISSOURI &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;40&lt;/td&gt;&lt;td&gt;SD&lt;/td&gt;&lt;td&gt;SOUTH DAKOTA &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;43&lt;/td&gt;&lt;td&gt;UT&lt;/td&gt;&lt;td&gt;UTAH &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;44&lt;/td&gt;&lt;td&gt;VT&lt;/td&gt;&lt;td&gt;VERMONT &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;47&lt;/td&gt;&lt;td&gt;WV&lt;/td&gt;&lt;td&gt;WEST VIRGINIA &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;48&lt;/td&gt;&lt;td&gt;WI&lt;/td&gt;&lt;td&gt;WISCONSIN &lt;/td&gt; &lt;/tr&gt;&lt;tr onmouseover="this.style.backgroundColor='#ccaaaa';" onmouseout="this.style.backgroundColor='#ffffff';"&gt; &lt;td&gt;54&lt;/td&gt;&lt;td&gt;AK&lt;/td&gt;&lt;td&gt;ALASKA &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/div&gt; </code></pre> <p>EDIT: Here is the HTML side that I've got. I kept it simple. It's possible in your HTML side you have a css configuration that is interfering.</p> <pre><code>&lt;div&gt; &lt;asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"&gt; &lt;Columns&gt; &lt;asp:BoundField DataField="ST_CD" HeaderText="ST_CD" SortExpression="ST_CD" /&gt; &lt;asp:BoundField DataField="ST_CD_ALPHA" HeaderText="ST_CD_ALPHA" SortExpression="ST_CD_ALPHA" /&gt; &lt;asp:BoundField DataField="ST_DESC" HeaderText="ST_DESC" SortExpression="ST_DESC" /&gt; &lt;/Columns&gt; &lt;/asp:GridView&gt; &lt;asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="&lt;%$ ConnectionStrings:WebTestConnectionString %&gt;" SelectCommand="SELECT [ST_CD], [ST_CD_ALPHA], [ST_DESC] FROM [STATE_VALUES] WHERE ([ST_CD] LIKE '%' + @ST_CD + '%')"&gt; &lt;SelectParameters&gt; &lt;asp:Parameter DefaultValue="4" Name="ST_CD" Type="String" /&gt; &lt;/SelectParameters&gt; &lt;/asp:SqlDataSource&gt; &lt;/div&gt; </code></pre>
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    1. POASP.NET GridView - Cannot set the colour of the row during databind?
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    1. USJoel Etherton
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    1. COI tried it.. and it didn't work.. yet it works for my datagrid.. this is so frustrating.. there must be some other underlaying issue.. :S
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      1. USDan
    2. CO@Dan: What framework are you using? I used that exact code in VS 2008 and it worked splendidly. I could test it in 2.0/3.0 though if that is what you're using.
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      1. USJoel Etherton
    3. COI'm using 3.5.. and I checked my visual studio and it's version 9.0.30729.1 so.. it's got service pack 1... Can you post the resulting HTML of the grid after you run the page?
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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